Drain-trap



(No Model.) J. A. THOMAS.

DRAIN TRAP.

No. 535,872. Patented Mar. 19, 1895.

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JACOB A. THOMAS, OF READING, PENNSYLVANIA.

DRAIN-TRAP.

SPECIFICATION forming part of Letters Patent No. 535,872, dated March19, 1 89 5.

' Application filed September 15, 1894- Serial No. 523,129. (No model.)

To aZZ whom it may concern:

Be it known that I, J AOOB A. THOMAS, a citizen of the United States,residing at Reading, in the county of Berks and State of Pennsylvania,have invented a newand useful Drain- Trap, of which the following is aspecification.

The invention relates to improvements in drain traps.

The object of the present invention is to improve the construction ofdrain traps adapted for use in connection with wash-bowls, bathtubs,sinks, and the like, to provide means for collecting and holding dirtand other heavy substances to prevent the same from being carried intothe waste pipe and clogging the latter, and also to provide a water sealfor preventing foul smelling gases from arising into the bowl, tub orthe like, from the waste pipe.

The invention consists in the construction and novel combination andarrangement of parts hereinafter fully described, illustrated in theaccompany drawings and pointed out in the claims hereto appended.

In the drawingsz-Figure 1 is an enlarged vertical sectional view of awashbowl provided, with a drain trap constructed in accordance with thisinvention. Fig. 2 is a detail perspective View of a drain tube. Fig. 3is a similar view of the drain trap.

Like numerals of reference designate corresponding parts in all thefigures of the drawings.

l designates a wash-bowl of the ordinary construction, provided with theusual bottom drain opening 2 and having a side over-flow passage 3; anddepending from the washbowl, is a drain tube 3', of ordinary configuration, designed to be coupled with an ordinary waste pipe.

Ordinary wash-bowls are provided with a strainer plate or screen, fittedin the drain opening thereof to preventlarge foreign substances frompassing intothe waste pipe; but the present invention dispenses withsuch strainer plate or screen, and in place thereof, a trap 4 isprovided, and is located within the drain tube 3.

The drain tube is provided at its upper end with a supporting flange 5,and it is secured to the bowl in the ordinary manner, and it is providedat opposite sides with horizontal openings 6, which receive resilient,supporting arms 7 of the trap 4. One of the horizontal openings 6 of thedrain tube registers with the lower end of the said over-flow passage;and the resilient arms 7 are substantially inverted L-shaped and havetheir arms extending outward and resting upon the drain tube at thelower edges of the openings 6. These arms permit the trap to be readilyremoved from the drain tube when it is desired to clean the same, or forany other purpose; and they also greatly facilitate its attachment tothe drain tube.

The trap consists ofa water-cup 8, having a circular bottom, andtruncated, conical sides, which taper from their upper edges to thebottom. Located within the water-cup, is a depending, conical, ordownwardly tapering neck 9, which is secured to the upper edges of thesides of the Water-cup, and which terminates a short distance above thebottom thereof. The sides of the water-cup are provided near their upperedges with an annular series of drain openings 10, which allow the waterfrom the bowl to pass freely into the waste pipe.

By reason of locating the drain openings 10 above the plane of the lowerend of the neck 9, the said lower end of the neck is always submerged,whereby an effective water seal is provided to prevent any gases frompassing upward from the Waste pipe into the bowl; and at the same timethis construction of trap causes all dirt and sediment to settle at thecl'osed bottom of the water-cup, from which the accumulation can bereadily removed.

The lower ends of the shanks of the L- shaped arms 7, are secured to theinverted conical neck, and it will be readily apparent that the doubleconical drain trap may be quickly applied to a drain tube of ordinaryconstruction, and that such drain tubes are not materially altered. Itwill also be seen that the drain trap is equally applicable to bath-tubssinks, and the like, and that it excludes foreign substances, andprovides an effective water seal, to prevent the backward and upwardpassage of gases.

Changes in the form, proportion, and minor details of construction, maybe resorted to Without departing from the principle or sacrificing anyof the advantages of the invention.

What I claim is- 1. The combination of a drain tube, and the doubleconical drain trap arranged within the drain tube and provided with asupporting device, and consisting of the conical cup 8 provided near itsupper edge with openings, and the inner conical neck 9 having its upperedges contiguous to and connected with the upper edges of the cup anddepending within the same, said supporting device serving to suspendboth the cup and the neck within the drain tube, substantially asdescribed.

2. The combination of a drain tube provided at opposite sides withopenings, and a drain trap located within the tube and forming a waterseal, and the opposite resilient arms engaging the drain tube at theopenings thereof, and secured to and supporting the trap within thedrain tube, substantially as described.

3. The combination of a drain tube pro vided with opposite openings, atrap comprising a tapering water cup provided at its sides with drainopenings, and an inverted conical neck extending downward from the sidesof the water cup to a point below the drain openings, and the oppositeresilient arms engaging the drain tube at the openings thereof andsupporting the trap in the tube, substantially as described.

In testimony that I claim the foregoing as my own I have hereto affixedmy signature in the presence of two witnesses.

JACOB A. THOMAS.

WVitnesses:

ELLWOOD H. DENPHER, L. J. DOUGHERTY.

